The Moon Jellyfish Effect: How HamiltonJet’s LTX Series Is Rewriting Waterjet Rules

When Nature Meets Naval Engineering

In the quiet waters of the Netherlands, a 20-meter passenger ferry named Inselexpress 2 is making waves—literally. Built by Next Generation Shipyard, this vessel is the first to deploy HamiltonJet’s LTX36 waterjets, a system that takes cues from an unlikely source: the pulsating propulsion of moon jellyfish. The result? A top speed of 23.5 knots during trials, powered by twin LTX36 jets driven by Volvo D8 engines (313 bkW) and ZF gearboxes. But speed is just the beginning.

The LTX is a game changer. It merges propeller-like efficiency with the maneuverability and shallow-water advantages of waterjets, says HamiltonJet’s Managing Director, Ben Reed.

Launched in 2023, the LTX series—available in LTX36 and LTX53 models—targets the low- to medium-speed market with a design that’s as elegant as it is efficient. By mimicking the hydrodynamics of jellyfish, engineers optimized nozzle size, reduced jet velocity, and trimmed weight, unlocking 40% more bollard pull and significant fuel savings. The secret lies in low-loss steering and hydrodynamics that minimize energy waste, a feat traditional waterjets struggle to match.

From Lab to Harbor: The Science of Smarter Thrust

The LTX’s lightweight construction isn’t just about shedding pounds—it’s about rethinking how waterjets interact with fluid dynamics. Unlike conventional systems that brute-force thrust through high velocity, the LTX slows water flow, reducing turbulence and drag. This approach, paired with a compact installation footprint, makes it ideal for ferries, patrol boats, and work vessels where space and efficiency are non-negotiable.

For operators, the math is compelling: higher bollard pull means better towing capacity, while fuel-efficient steering translates to lower emissions and costs. And with Inselexpress 2 already proving the concept in real-world conditions, HamiltonJet’s jellyfish-inspired innovation might just be the ripple that turns into a tidal shift for marine propulsion.